JPH10184004A - Construction method for shuttering for structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To serve for the convenience of subsequent work and improve work efficiency by making possible to support a pipe in an upright condition reliably. SOLUTION: After a reinforcement arrangement is formed by assembling reinforcements on a surface G for iristalling a foundation, shutterings 4 are fixed on both sides of the reinforcement arrangement in a detachable manner by fixing means. In addition, after the main body of a supporting device having multiple supporting bodies that are made wider toward the lower end, is fixed to the installation surface G, pipes P are inserted into every supporting bodies, and made to contact the outside of the shutterings 4. After a transverse pipe P' are placed astride the pipes P, concrete is placed in a space 21 formed between the shutterings 4, and after the concrete sets, a concrete body is formed by removing the pipes P, P' and the shutterings 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a formwork method for constructing a concrete frame such as a foundation, an underground beam, a wall surface, or the like.

[0002]

2. Description of the Related Art As is well known, when a concrete body such as a foundation is constructed, a construction method called a formwork method is widely used.

[0003] In this method, a plurality of vertical ribs made of pipes are vertically arranged on the outer surface of a facing formwork, and a horizontal pipe serving as a horizontal pipe is crossed with the vertical ribs. In some cases, a plurality of piers may be arranged to save the pier.

In this case, a pipe P ″ arranged in the vertical direction
A strip-shaped support 11 is attached to an installation surface G 'of a foundation or the like located outside a lower portion of a formwork (not shown) arranged face to face as shown in FIG.
a, and a plurality of support pieces cut out in the support tool 11a.
22 is cut and raised, and the pipe P "is inserted, and the standing state is maintained.

[0005]

However, in the above-mentioned conventional method, the pipe P "is formed by the support piece 22 which is cut and raised.
And the width of the support piece 22 is usually a pipe P ″
Since the pipe P ″ is formed smaller than the inner diameter of the pipe P ″, the pipe P ″ is supported in an unstable state swinging back and forth and right and left.

[0006] Accordingly, in order to maintain the standing state of the pipe P ", the work of mounting the pipe P" on the mold or the like must be performed while grasping the pipe P ", and the work becomes very complicated and the workability is remarkably lacking. It had a great problem.

SUMMARY OF THE INVENTION Therefore, the present invention has been made to solve the above-mentioned conventional problems, and it is intended to surely support a pipe in an upright state, to provide a convenience for a subsequent operation, and to perform a series of operations. The task is to improve efficiency.

[0008]

Means for solving the above problems are as follows. The means adopted by the present invention is to assemble a reinforcing bar 1 on an installation surface G such as a foundation to form a reinforcing bar 2 and then apply the reinforcing bar. After the form 4 is detachably fixed to both sides of the support member 2 by a fixing means, and further, the support body 12 having a plurality of support members 13 wider than the lower end side is fixed to the installation surface G, A pipe P is inserted into each of the supports 13, the pipe P is arranged so as to be in contact with the outer surface of the mold 4, and a horizontal pipe P ′ is erected between the pipes P. Concrete is poured into the space 21 formed in the above, and after the concrete is hardened, the pipes P and P 'and the formwork 4 are removed to form a concrete frame.

Therefore, in the formwork method according to the invention, the pipe P is inserted into the support 13 of the support body 12 fixed to the installation surface G.
Since the lower end 13 is formed to be wider toward the lower end, the inner peripheral surface of the pipe P is engaged with the support 13 and is supported in an upright state.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a formwork method according to the present invention will be described below with reference to the drawings.

First, as shown in FIG. 1, a reinforcing bar 2 having a desired shape is conventionally assembled by using a plurality of reinforcing bars 1 according to the shape of a concrete frame to be constructed on an installation surface G of a foundation or the like. Mesh form 4 in which a large number of holes 3 are formed in a metal plate
Face to face.

In this case, for example, as shown in FIG. 2, a rod-shaped separator 5 having screw portions 5a at both ends is inserted in the thickness direction of the reinforcing bar 2 and fixed by a fixture 6, and furthermore, the separator 5 is attached to the end side of the separator 5. The recesses 8 of the attached plate-like washers 7 are fitted into the ribs 9 of the mold 4, and the ends of the separator 5 are inserted through the holes 3 of the mold 4. Then, the nut 10 is screwed into the screw portion 5a of the separator 5, and the mold 4 is connected.

Thereafter, the support 11 is fixed to the installation surface G located on the outer side of the formwork 4.
As shown in FIGS. 3 and 4, a support body 12 made of a long metal strip is bent at a predetermined interval in the support body 12 so as to be wider toward the lower end side. A horizontal portion formed between the supports 13 of the support main body 12 is formed at the upper end side thereof with an acute-angled top 15 formed on a pair of substantially horizontal steps 14 at the upper end side. A mounting hole 17 is formed substantially at the center of the hole 16. A fixture 18 such as a nail is inserted into the mounting hole 17 so that the support 13 projects upward as shown in FIG. Driving into the installation surface G and fixing.

Next, when a plurality of pipes P are inserted into the tops 15 provided on the respective supports 13 of the support 11, the inner peripheral edge of the pipes P is engaged with the tops 15, and the lower end surfaces of the pipes P are supported. Since the pipe P is set while being placed on the step portion 14 of the body 13, the pipe P is reliably supported in the upright state without swinging.

When the width D of the lower end of the top portion 15 is made larger than the inner diameter d of the pipe P, the lower end surface of the pipe P does not contact the step portion 14, but the top portion 15 is formed wider toward the lower side. As a result, the inner peripheral edge of the pipe P is engaged with this, and in this case, no run-out occurs.

Then, as shown in FIGS. 5 and 6, a plurality of horizontal pipes P 'are temporarily fixed such as binding wires in the lateral direction outside the pipe P, and a foam tie (registered trademark) is attached to the separator 5. After inserting and fixing the horizontal pipe P 'to the inner peripheral surface of the foam tie 19, the horizontal pipe P' is installed between the pipes P by screwing the nut 20 to the threaded portion 5a of the separator 5. I do.

Next, concrete is poured into the space 21 formed between the molds 4 and, after curing, the pipes P, P 'and the mold 4 are removed to form a concrete frame. Become.

Since the pipe P can be reliably maintained in the upright state, the work of attaching the horizontal pipe P 'and the formwork 4 is simplified, and as a result, a series of construction work can be performed efficiently. This can contribute to shortening the construction period.

Further, since the top part 15 of the support A, which becomes wider toward the lower end, has the flexibility of being able to insert and support pipes P having different inner diameters, the operation is very convenient.

In the above embodiment, the support body is
Although the support member 13 is formed by bending the support member 12, the present invention is not limited thereto. For example, the support member 13 is formed separately as shown in FIG. May be fixed at predetermined intervals.

Further, it is not necessary to provide the step portion 14 in the support 13 as in the above embodiment, and the support 13 may be simply formed in an inverted V-shaped mountain shape. It is also possible to form a body and project from the upper surface of the support body 12.

Further, there is a case where the form 4 is disposed outside the pipe P and concrete or the like is cast around the pipe P in some cases. However, as described above, the lower end of the pipe P is Since the pipe P is securely supported by the support 13 of 11, the pipe P is not tilted by the casting of concrete or the like, and the casting operation can be performed while the standing state is maintained.

The means for fixing the reinforcing bars 2 to the formwork 4 is not limited to the above embodiment, but may be any fixing means capable of removably fixing the formwork 4 to the reinforcing bars 2.

The present invention can of course be applied to a conventional so-called plywood formwork method.

[0025]

As described above, since the present invention inserts and holds a pipe as a vertical flap on a support which becomes wider toward the lower end, the inner peripheral surface of the pipe is supported. The pipe is engaged and supported in an upright state without causing the pipe to sway. Therefore, it is possible to provide a convenience for a series of operations to be performed thereafter, and it is possible to obtain a special effect that can greatly contribute to shortening of the construction period.

[Brief description of the drawings]

FIG. 1 is a side view showing a construction state as one embodiment of a formwork method according to the present invention.

FIG. 2 is an enlarged front view of the main part.

FIG. 3 shows an embodiment of a support used in the present invention,
(A) is a front view, (B) is a plan view.

FIG. 4 is an enlarged sectional view of the main part.

FIG. 5 is a partial cross-sectional front view showing a construction state.

FIG. 6 is a front view showing a construction state.

FIG. 7 is an enlarged front view of a main part showing another embodiment of the support.

FIG. 8 is a partial cross-sectional front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rebar 2 ... Reinforcement 4 ... Form 12 ... Support body 13 ... Support 14 ... Step 21 ... Space G ... Installation surface P ... Pipe P '... Horizontal pipe

Continued on the front page. (72) Inventor Hiroshi Miyamoto 7-2, Kodenmacho, Nihonbashi, Chuo-ku, Tokyo Inside Igeta Building Materials Co., Ltd. (72) Inventor Masamichi Shimoe 7-4 Haruki Honcho, Kishiwada-shi, Osaka Limited Ras Shimoe Limited Formwork industry

Claims (4)

[Claims] After assembling a reinforcing bar (1) on an installation surface (G) of a foundation or the like to form a reinforcing bar (2), a formwork (4) is fixed to both sides of the reinforcing bar (2) by fixing means. A support body that is detachably fixed and has a plurality of support members (13) protruding from the upper surface that are wider toward the lower end.
After fixing (12) to the installation surface (G), each of the supports (13)
After the pipe (P) is inserted into the pipe (P), the pipe (P) is placed in contact with the outer surface of the formwork (4), and the horizontal pipe (P ') is erected between the pipes (P). The space formed between the formwork (4)
(21), concrete is poured, and after the concrete is hardened, the two pipes (P), (P ') and the formwork (4) are removed to form a concrete frame. Frame method. 2. The structure according to claim 1, wherein said support body (12) is formed of a strip and said support body (12) is bent to form a mountain-shaped support (13). Formwork method. 3. The method according to claim 2, wherein a step (14) is formed on an upper end side of the support (13). 4. The method according to claim 1, wherein a plurality of the supports (13) are provided on the support body (12) at predetermined intervals.